Chronic villus sampling (CVS) is the name of the test.
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░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob
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▀█▌░░░▄░▀█▀░▀ ░░ Copy And Paste Him onto all of ur brainly answers
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░░░░░░░▀███▀█░▄░░ Over brainly
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Im guessing because the smoke is toxic!! Im not sure but it most likely has something to do with the smoke/toxins in the air